Deep linking into front-end routes not working as expected

[humphd]

The app has the following files:

/index.html
/map/index.html
/data/index.html
/about/index.html

If you navigate to / you are dropped into the "home" page, and Next.js' router takes over: navigating to /map will happen client side.

Let's say I'm on https://www.snowyowls.ca/map/?region=CA-ON and I want to share this link with a friend. When they load that, they will still end-up on the home page, and the URL will be wrong.

I'm not sure if this is related to arc's spa static asset option, a bug in next's router, or something I'm doing incorrectly.